Machine for operating upon paper-board.



P. G. FBELEY.

MACHINE POR OPERATING UPON PAPER BOARD.

APPLIGATION FILED MAY 27,1913.

Patented Dec. 29, 1914.

4 SHEETS-SHEET 1.

l.AAN

@mib/www F. G. FBELEY. MACHINE POE OPERATING UPON PAPER BOAED.

APPLICATION FILED MAY 27, 1913.

4 SHEETS-SHEET 2.

'Il II anton hln-ALL -\%m F. G. P-EELEY.'

MAGHINFJ POR OPERATING UPON PAPER BOARD. APPLICATION FILED MAY 27, 1913.

L l 229%@ Patented Dec. 29, 1914.

4 SHEETS-SHEET 3.

v l y QAM hfw /f/W. M07 1 Bf wm P. G. FBELEY. MACHINE POP OPERATING UPON PAPER BOARD. APPLICATION FILED MAY 27,1913.

l l 2.26 Patented Dee. 29, 1914.

t 4 SHBETS-SHEET4- 5K .57 fr f/ v 6 y h fi/f f /7 ff l I I \l l 70 I vf. f

Y Pff fz FRANK Gr. FEELEY, 0F CHICAGO, ILLINOIS, ASSIGNOR TO M. ID. KNOWLTON COMPANY, 0F ROCHESTER, NEW YORK, A CORPORATION OF NEW YORK.

MACHINE FOR OPERATING- UPON PAPER-BOARD.

Illinois, have invented certain new `and use-l ful Improvements in Machines for V,Operating upon Paper-Board, of which the4 following is a specication.

This inveiition relates to a machine for operating upon paper board, and especiallyV to a machine for creasing or slitting. said board, and one of the main objects of the invention is to providean improved machine of this class in which one or bothof a pair of rolls or shafts carrying creasing or other blades may be more positively and rigidly supported, near the center. or centers thereof, than in machines as heretofore constructed, in order that such shaft or shafts may better resist the pressure or thrust-due to the action of such creasing or other blades upon a board passing between them.

i Another object of the invention of equal importance is to provide means for quickly and positively adjusting or changing the width of the pass between c operating creasing o-r other blades, in order that these blades and the parts carrying them may be readily set to permit the blades to crease or otherwise act upon stock of differentthicknesses.l Other features of the invention not hereinbefore referred to will be hereinafter described and claimed, and are illustrated in the accompanying drawings, in which,

Figure l is a rear elevation of a combined creasing and slitting machine embodying. the present invention; Fig. 2 is an enlarged, end

elevation ofthe saine, with parts broken away, looking from the left in Fig. l; Fig. 3 is an enlarged, longitudinal, vertical section of a portion of said machine, showing the adjustments and the central supports hereinbefore mentioned; F ig. 4 is an enlarged detail of means for raising and loweringone end of thevupper cross-bar ofthe machine, and also. shows the manner in which the upper shaft moves with said cross-bar; Fig. 5 is a detail illustrating on an enlarged scale,

yand in vertical section and rear elevation, the

central portion of the mechanism shown in Fig. 1; Fig. 6 is an enlarged, sectional detail through a portion ofthe frame-work of the machine, showing the manner in which the several superposed frame members are secured together, and Fig. 7 is an enlarged Specification of Letters Patent.

Patenten nee. aa, rafa.

Application filed May 27, 1913. Serial No. 770,116.

detail illustrating in"4 plan an adjusting wedge'which will be hereinafter referred'to. Similar reference characters designate like 'parts in all the figures of the drawings.

My invention may be embodied in any suitable type of machine for operating upon paper-board-such as a creasing machine, a slitting machine, etc.-in which itis necessary or desirable to provide eXtra' stiffness and support close to the points at which eachA sheet is Voperated upon in passingthrough such a machine. The machine illustrated as embodying the invention is, as before stated, shown as a combined creasing and slitting machine,.most of the features of which .are

or may be those of well-known construction employed in similar machines in general use. The main frame and legs of the machine are designated generally by 2, 'and' supportat their ends suitable uprights, such 'as' 3, (which, however, may be specifically different from corresponding portions of other machines) and above the frame members -3 are extensions, such as 4l, in which is supported an upper cross-bar, 5, substantially'f the usual construction. Other usual parts are'a main driving shaft, 6, a band-wheel, 7, thereon, ya clutch-operating or shifting lever,` 8, pivoted in a bracket extension, 9, of the main frame or bed of the machine, a transverse connecting-rod, 10,'for operating said shifting lever, and connections, such as the rod 11 and the controlling handle or lever l2, for' operating the shifting lever 8 from a point convenient to the operator whereby to control the clutch and consequently the starting and stopping of the machine. In addition to these there is the usual forward bracket extension, 13 of the main frame, support-ing in a well-known manner a feedtable, lll, on which successive sheets of cardboardare placed by the operator or operators and fed into the machine, suitable gages being also employed and shown in connection withsaid feed-board.

In connection with the devices before described and with various other usual parts of a machine of the class illustrated, which parts have not been referred to hereinbefore in detail, means are employed in which areiembodied the principal features of the: presentl invention, to wit, mechanism for varying the width of the pass between the creasing blades in accordance with the thickness of the stock, and means for prop` erly supporting one Orbeth oftherolls or shafts carrying such blades. in all'adjusted positions of the'rolls andblades, The frolls l.or shafts just refer-red `to v.for carrying the creasing blades are twQ of the principal elements -of vthe machine illustrated@ LThe upper lroll or4 shaft lis indicated herein-at 15 andthe lower at 16, and each isy QI* may be of substantially the usual construction.

. .lhey areshown as disposed horizontally.

- their sides for engaging parallel vertical guides formed by openings, 18, in the upiights 3 at opposite ends of the framework. 4'.lhe ends of thel upper roll 15 maybe journaled in bearings in a similar manner, and

the yupper roll. should also be so mounted as to be capable of movement toward `and from the lower roll or shaft 16, for the pur.- pos'e of providing for the` adjustment, hereinbeforedescribed for stock of different thicknesses. In themachine shown the shaft is journaled'at its oppositeends Vin, boxes, 19, ,similar tothose slidwn A:it-17, except that lthey face in the opposite direction. These bpxes 19 are mountedy to slide up and down bnthe guides formed by the openings 18 in .the ends of the frame-work.V `The lower shaft 16 and its bearings, however, will usuallyk be maintained in a stationary'. position with the boxes 17 in contact with the stop# Walls at vthe bottoms of the openings 1 8.- flhe boxes 19 are` intended to movel up and down on said vertical guides formed by the penings 18, the extent of movement being dependent'upon therange of` thicknesses of the boards to be put through the machine.

4In lthe construction shownA the boxes 17 and 19 at each end of the machine are maintained at a suitable distance apart by means of oneor more strong coiled spr-ings,V such as 2Q', interposed between the upper side of the lower box and the lower side of the upper boxth ese portions of the two boxes being eut away and suitably shaped, as illustrated, to permit proper cooperation with rlhe springs will always be undercompressionand the force exerted by thein will be suihcient to maintain the sections or halves of each box in proper con# tact, andalso suflicient to hold the lower box 'down at the extreme lower end of the open- .;inglS and to hold -the upper box19 always in the desired position'or adjustment. Usudass all-y the upper sides of the upper. boxes 19 Will abut directly against movable stopfaces, set to predetermined positions, controlling thelocation of such upper boxes and ther shaft y15 with respect to the lower shaft and its boxes. VThese stop-faces are preferably embodied in the upper cross-bar 5, as will beclear by referring particularly to Figs, from which it willbe seen that said cross-bar has at 5fand at'each end of the bar-a horizontal stop-face resting directly on top of thel upper half of the upper box A1,9.,l yThis upper crossbar 5 is the 'usual heavy bar spanning the space between the end frames or uprights ofthe machine and constituting the .principal means for tying these upri'ghts together at their upper ends. 4 'lheffaces .5 of this cross-bar are intended to lie in v a cominon horizontal plane., and the end portions, 5, of said cross-bar are intended to be positively guided vertically on the upper portions ofthe guides formed by the openings 18 before described. The object of' this construction is to permit said cross-bar to be moved up and down exactly .vertically and lto the same extent at both ends thereof, and to keep the gage stopfaces 5 thereof always in contact with the upper sides of the boxes 19, in order that, through the movements of this upper bar 5, up and dolwn, exactly equal movements or adjustments of the upper shaft or roll 15 may beobtained at opposite ends of said shaft, and the creasing or other blades carried thereby maintained in proper relation to the coperative` blades of the lower roll 16 ,whatever may be the adiustment of the parts.

In order that the up and down adjustment of the cross-bar 5 and of the upper shaft lcontrolled by it and by the springs 20, before described, may be positively elliccted, and in order also that uniform up and down movements may be imparted to both ends of said cross-bar, suitable mechanism is preferably employed for moving said crossbar up anddown through equal distances at opposite ends thereof in a givenl time. Any suitable means may be employed for this purpose. That shown comprises an upper cross-shaft, 21, journaled in bearings in bracket extensions, 22 and 23, of the top members f1` of the end `uprights,.and this shaft has at the right-hand end of the machine acrank-handle. 2l, for turning it. Said shaft also carries a pair of bevelgears, 25 and 26, which mesh with corresponding bevel-gears, 2T and 28, secured to the upper ends of short shafts, 29 ant-1.30, journaled in suitable bearings in the upper portions of the members 4 lof the 'Framework, these shafts being held against vcrtical movement betweenthe cheeks of the hubs of the vertically disposed bevel-gears and of stop-collars, 31, thereoxnfbut having chine is most likely to bend such shaft or masses l m.

at their lower ends threaded portions 32,l `engaging corresponding threadsv of vertically disposed nuts, 33, formed-in the upper sides ofthe end portions 5 of the crossbar 5. (See Fig. 4). The construction is such' that when the crank-handle 2lil isv turned in one direction or the other the opposite ends of the cross-bar 5, will be raised or lowered exactly equal-distances through the join-t action of thebeviel-gearsl and the screw threads 32- and 33, as-"will beobviousf When the crank is turnedin a direction to cause the descent of said cross-bar the roll 15 and its creasing blades will of course be brought closer to the roll 16 and itsl l5 and its boxes 19, but will also put the springs 20 under further compression.. When the crank-handle is turned in thev opposite direction the cross-bar will ofcourse be raised and the power of the eX'- panding springs 20 will force the opposite ends'of the upper shaft 15 (and also the boxes 19) upward equal distances maintaining them in constant engagement with the rising upper cross-bar. rllhus under all conditions of operation the upper cross-bar and the upper shaft 15, with its boxes and creasing blades, will move vertically in unison with one another. The construction is also such that, when the handle is released after it has been turned to set Ithe shaft 15 in the desired vertical relation to the shaft 16, all of the parts` will be positively held or locked in the desired adjusted positions, this result being vdue to the manner in which the intermeshing teeth and threads are constructed and organized.

lt is also important, as before stated, to provide in a machine of this class a strong support for one or both of the creasing rolls near the centers thereof, where the pressure in creasing sheets passing through the mashafts away from the normal position. I therefore provide means for' stitl'ening each shaft at or near its center, that is, adjacent to the creasing blades. ln order to accomplish the desired result a central bearing 'heavy cross-bar 5 receives the thrust of the creasing rolls substantially at or near its center. i

ln Figs. 1 and 5 creasing blades, 34:, of

welk-known type 'are shown as clamped to the upperrollior shaft 15 and complementary creasing blades, 35, are shown as correspondingl'y secured to the lower roll or shaft 16. As is usual, these creasing blades are shiftable to various positions along their shfafts'in order that they may operate upon the stock to crease it on any lines desired. For this reasonthe central bearing fjust referred to is also preferably shiftable lengthwise of the cross-bar 5, said cross-bar "having, in the construction shown, a guide,

75, o'n which the main element, 36, of the central bearing is mounted to slide back and forth from o ne end of the guide to the other. (See Fig. l.) When located in the desired position lengthwise of said guide 75 the central bearing 36 may be securely clamped in .place and held there, as bymeansof clamp screws, such as 37. rlhe central bearing 36 embodies in the construction illustrated (see particularly Figs. 3 and 5) two principal elements, one of which is the main part or saddle 36 of the bearing, while the other is a half-bearing, 38, which is secured to said saddle by the clamp screws 37. The shaft 15 is intended to cooperate with the bearing surface of this half-bearin' 38 and to run in said halfbearing. Tie preferred construction is one in which a central sleeve, 39, is clamped to the shaft .15 at the proper point in Ithe length thereof, which point will depend upon the position of the bearing as a whole lengthwise of the shaft l5, and it is the outer surface of this sleeve 39 that is in im` mediate contact with the bearing surface of the half-box 38. The object of this is to remove the wear at the central bearing from y the shaftproper and have all the wear come upon the sleeve 39, which may be readily replaced when necessary. This sleeve is or may be clamped to the shaft in the'same manner as the creasing blades 34. An important feature of the 'central bearing, which, it will be seen, moves up and down with the cross-bar 5 and is located vertically by the movements of said cross-bar, is the provision of means for compensatingv for and taking up wear of the bearing. In order to accomplish this result I have made provision for obtaining a relative adjustment vertically between the saddle 36 and the half-box 38, the means illustrated being a wed-geLO, which is placed between these two parts, as shown in Fig; 3, and may be moved in or out between them to any de' sired position to determine the vertical relation between said parts 36 and 38. lt willi be noticed that the upper side of the half box 38 which coperates with the lower side of the wedge 40, is tapered to the same angle vas the lower side of the wedge itself, in

order that itmay coperate properly with the wedge. An adjusting and clamp screw,

such as 41,v is shown for the purpose of hold'- ing the wedge 40 in any position to which it may be shifted. The clamp-screws 37 serve to secure all the parts, 36, 38 and 40, firmly together when tightened.- For' the purpose of securely holding the central bearing in the desired position lengthwise of the shaft 15, another clamp screw is illustrated at 42 which engages a gib, 43, and when tightened clamps the gib between the slide andthe guide in the well-known manner. The lower shaft 16 is also preferably supported and 'stiffened by a central bearing, such as 44, which is substantially identical in construction with the central bearing for the upper sh-aft 15 and is secured in place and adjusted by substantially identical means, except that the wedge for determining the verticall relation between the saddle portion and the half-box of the lower bearing is slightly different from the wedge 40 for the upper central bearing. The wedge for the lower central bearing is shown at 45, the difference between it and the upper wedge 40 being due merely to the y fact that there is not vroom for a wedge of the type shown at 40 in the organization of the parts illustrated in connection with `the lower central bearing. This wedge is shown in detail in Fig. 7 and its adjusting screw 45', passes into and works in a threaded lug projecting upward from the saddle portion of the lower central bearing 44, as illustrated at 45. The lower shaft 16 is also preferably journaled in the half-box of the central bearing 44 in the same manner as the upper shaft 15, that is to say, a central sleeve, 46, is secured to the shaft 16 and this sleeve turns directly inthe lowerbearing. The lower central bearing 44 is also preferably supported in a manner similar to that previously described in connection with the upper central bear-ing 36, that is to say,

said lower central bearing is carried by a lower cross-bar, 47, which, however, is rigidly secured to the main frame 2 of the machine, and this lower cross-bar has in turn a guide, 48, on which the saddle portion of the lower bearing. 44 is adapted to slide, and to which it is adapted to be secured substantially in the manner before described in connection with the upper central bearing. Thus, both the upper and the lower central bearings illustrated are supported in such a manner, by substantially rigid upper and lower crossbars, asl to support and stiffen the shafts 15 and 16 carry-A ing the creasing blades, at or near the ceni ters of said shafts, and at the same time provision is made for all necessary regulation of the distance between said shafts 15 and, 16 and the creasing blades, and also for vertical adjustments for taking up `wear in the vbearings themselves.

At the rear of the machine, and in line in which the shafts 15 and 16 are mounted,

and in a substantially similar manner these boxes for the slitting shafts are mounted between the walls of guides formed by vertical openings, such as 56, similar to the openings 18. Springs, 57, similar to those at 20, are also shown for maintaining the boxes at the desired adjusted distance apart. In other words, the construction and organization of these parts is such that the shafts carrying theslitting knives may be supported and stiffened, if desired, in substantially the saine manner as the shafts carrying the creasing blades, but as this is not ordinarily necessary, a cross-bar and adjusting means therefor similar to the cross-bar 5 and its adjusting mechanism are not illustrated herein.

Movement is imparted to the various shafts and creasing and slitting blades, just described, from the main driver, 6, by any suitable means, but preferably through intermeshin gears so constructed and organized that t 1e teeth of the intermcshing gears will always intermesh to substantially their full depths in all vertical adjustments of the shafts they are intended to operate. The train of gearing employed for the purpose is masa-ated at ce, ci, c2, es, ci, c5 .md ce, the gear-wheel 60 being the primary gear for driving the gears 61 and 63 of the upper and lower creasing shafts, and for also driving the gears and 66 of the upper and lower slitting shafts, while the gears 62 and 64 are intermediates by means of which, in a manner which will be obvious by reference to Fig. 2, all of the gears on the ends of the creasing and slitting shafts are maintained in mesh to lsubstantially their full depths with the gears 60, 62 and 64, no matter what may be the vertical position to which either the upper creasing shaft or the upper slitting shaft may be adjusted.

In Fig. 6 I have illustrated in detail the manner in which the three main sections of the frame-work at each end of the machine are secured together. From this view it will be seen that the lower or main section 2, the middle or housing section 3 in which the ends of the creasing and slitting shafts and their gears are mounted, and the upper section 4 supporting the upper cross-bai` 5, are all securely tied together by vertical through-bolts, 70, threaded at their upper and lower ends to receive the usual nuts, 71

and 72, for holding all of the parts solidly together, so that the bolts will take the stresses due to the creasing action. Each of these through-bolts has near the center thereof a collar, which is seated in a counter-bore at the top of the housing 3. 7When the nuts '72 are tightened the housings 3 are firmly secured in place, while the other parts can-be assembled or moved as desired.

What I claim is l. In a machine of the class described, the combination with a pair of uprights, of a cross-bar between said uprights, a pair of parallel shafts journaled in bearings in said uprights, a bearing carried by said cross-bar for cooperation with one of said shafts be tween the ends thereof, and means for effecting a simultaneous adjustment of the crossbar and that shaft which coperates with said bearing on the cross-bar in a direction toward and from the other shaft.

2. In a machine of the class described, the combination with a pair of uprights, of a cross-bar between said uprights, a pair of parallel shafts journaled below said crossbar in bearings in said uprights and disposed one above the other, a central bearing carried by said cross-bar for cooperation with the upper one of said shafts near the center thereof, and means for effecting a simultaneous adjustment of the cross-bar and the upper shaft which coperates with said central bearing on the cross-bar in a direction toward and from the other or lower shaft.

3. In a machineof the class described, the combination with a pair of uprights, of a pair of separated cross-bars disposed one above the other between said uprights and one being vertically adjustable relatively to the other, a pair of parallel shafts journaled in bearings in said uprights and disposed one above the other between said cross-bars. and a pair of bearings carried respectively by said cross-bars for cooperation withl said shafts between the ends thereof.

4. In a machine of the class described, the

combination with a pair of uprights, of a cross-bar between said uprights, a pair of parallel shafts journaled in bearings in said uprights, a central bearing,r mounted on and movable lengthwise of said cross-bar near the center 4of said bar for coperation with one of said shafts near the center thereof, and means for securing said bearing to the cross-bar in any of its positions.

In a machine of the class described, the combination with a pair of uprights, of a cross-bar between' said uprights and having` a longitudinal guide near its center, of a pair of parallel shafts journaled in bearings in said uprights, a central bearing', a slide to which said central bearing is secured, said slide being mounted on and movable along said guide, and means for securingv s aid slide to said guide in any of its positions.

t. In a machine of the class described, the combination with a pair of uprights, of a cross-bar between said uprin'bts, a pair of parallel shafts journaled in bearings in said uprights, a saddle secured te said cross-bar near the center of the latter. a central bearing associated with said saddle, and means for effecting a relative adjustment between said saddle and central bearing.

7. In a machine of the class described, the combina-tion with a pair of uprights, of a cross-bar between said uprights, a pair of parallel shafts journaled in bearings in said uprights, a'saddle secured to said cross-bar near the center of the latter, a central bearing associated with said saddle. a wedge between said saddle and bearingfor elllectingr` a relative adjustment between said parts, and means for securingr said wedge in any desired adjusted position.

8. In a machine of the class described, the combination with a pair of uprights, of av cross-bar bet'ween said uprights, a pair of parallel shafts journaled in bearings in said uprights. a saddle secured to said cross-bar near the center of the latter. a central bearine, associated with said saddle. a wedge between said saddle and bearingr for effecting a relative adjustment between said parts, and meansV for shifting said wedge and forsecuringl it in any desired adjusted position.

9. In a machine of the class described, the combination with a. pair of upriqhts, of a. cross-bar between said uprights and having a longitudinal guide near its center, a pair of parallel shafts journal'ed in bearings in said uprights, a saddleslidable on said guide, a central bearing associated with said saddle. and means for effecting a relative adjustment between said saddle and central bearing,"l and for securing said parts in their adjusted positions.

10. In a machine of the class described. the combination with a pair of uprights, of a cross-bar between said uprights and having a longitudinal guide near its center, a pair of parallel shafts journaled in bearings in said uprights, asaddle slidable on said guide, a central bearing associated with said saddle, a wedge between said saddle and bearing), for effecting a relative adjustment between said parts, and clamiwscrews for holding said parts in their adjusted positions and securing them to said Jguide.

ll. In a machine of the class described, the combination with a pair of uprights, of a pair of separated cross-bars disposed one above the other between said uprights, a pair of parallel shafts journaled in bearings in said uprights and disposed one above the other between said cross-bars, a pair of central bearings` mounted on said respective crossbars near the centers thereof and movable lengthwise of said b'ars, and means for securing` said bearings to said cross-bars in an)T of their positions.

12. In a machine of the class described, the coi'nbination with a pair of uprights, of a cross-bar between said uprights, a pair of parallel. shafts journaled one above the other in hearings in said uprights, a central bearinfr carried said cross-bar for coperation with one of said shafts near the center thereof, and means for effecting a' vertical adjustment of said central bearing'.

13. In a machine of the class described, the combination with a pair of /uprights, of a jair of separated cross-bars disposed one above the other between said uprights, a pair of parallel shafts journaled in bearings in said uprights and disposed one above the other between said cross-bars, a pair of central bearings mounted on said respective cross-bars near the centers thereof for cooperation with said shafts near their centers, and means for effecting independent vertical adjustments of each of said central bearings.

14. In a machine of the class described, the combination with a pair of uprights, of a cross-bar between said uprights, a pair of parallel shafts journaled in bearings in said uprights and disposed one above the other below said cross-bar, a central bearing carried by said crossbar for coperation with said upper shaft, and means for simultane ously moving said cross-bar and the upper shaft toward or away from the lower shaft and for holding them in such positions.

15. In a ,machine of the class described, the combination with a pair of uprights, of a cross-har between said uprights, a pair of parallel shafts journaled in bearings in said uprights and disposed one above the other below said cross-bar, a central bearing carried by said cross-bar for coperation with said upper shaft, means connected with opposite ends of said cross-bar and the upper shaft for ioving said ends equally toward or away from the lower shaft, and means for securing said cross-bar and the upper shaft in said adjusted positions.

16. In a machine ofthe class described, the combination with. a pair of uprights having vertical guides, of a cross-bar spanning' the space between said uprights and mounted to slide up and down `on said guides, a pair of parallel shafts journaled one above the other below the cross-bar in bearings in said uprights, a central bearing carried by said cross-bar for coperation with said upper shaft, and means for positively moving said cross-bar and central bearing up and down between said uprights.

17. In a machine of the class described,

the combination with a pair of uprights having vertical guides, of a cross-bar spanning the space between said uprights and mounted to slide up and down on said guides, a pair of parallel shafts journaled one above the other below the cross-bar in bearings in said uprights, a central bearing carried by said cross-bar for coperation with said upper shaft, and means connected with opposite ends of the cross-bar for positively moving said ends equally up or down and with them said central bearing.

18. In a machine of the class described, the combination with a pair of uprights havingvertical guides, of a. cross-bar spanning the space between said uprights and mounted to slide up and down on said guides, a pair of'parallel shafts journaled one above the other' below the cross-bar in bearings in said u'prights, a central bearinf;r carried by and movable lengthwise of said cross-bar for coperation with said upper shaft at any point near the center thereof, and means for positively moving said crossbar and central bearing up and down between said uprights.

19. In a machine of the class described, the combination with apair of uprights having' vertical guides, of a cross-bar spanning the space between said uprights and mounted to slide up and down on said guides, a pair of parallel shafts journaled one above the other below the eross-bar in bearings in said uprights, a central bearing carried by said cross-bar for coperation with said upper shaft, means for positively moving said cross-bar and central bearing;` up and down between said uprights, and means for effectingan independent vertical adjustment of said central bearing relative to said shaft.

20. In a machine of the class described, the combination with a pair of uprights having vertical guides, of a cross-bar spanning the space between said uprights and mounted to slide up and down on said guides, a pair of bearings carried by and vertically movable on said uprights, a pair of parallel shafts disposed one above the other below the cross-bar, the upper shaft being journaled in said vertically movable bearings and the lower shaft being also journaled in bearings in said uprights, a central bearing.,r carried by said cross-bar for coperation with said upper shaft, and means for positively moving said cross-bar and upper shaft up and down between said uprights..

21. In a machine of the class described, the combination with a pair of uprights, of a cross-bar between said uprights, a pair of parallel shaits ljournaled in bearings in said uprights, a central bearing carried by said cross-bar, and a journal sleeve surlio meme@ rounding and Secured to said shaft near 4the center thereof and cooperative with said bearing;` l v 22. In e machine of the class described,

the combination with a pair Lof uprights,'

nel sleeves surrounding' and secured respectively to said shafts near the centers thereof and coperative With seid respective 15e bearings.

Signed at Chicago, inthe county of Cook, and State of illinois,V this 22v day of May A. D. 1913.

FRANK Gr. FEELE Y.

Witnesses: l

R. C. GULLEN, N. F. MORRISSEY. 

